Heating apparatus



June 23, 1925.

J. A. THOMAS HEATING APPARATUS Filed Feb. 6, 1923 Patented June 23,1925.

UNITED STATES 1,543,639 PATENT OFFICE.

JOHN A. THOMAS, OF ROCHESTER, NEW YORK, A SSI GNOR TO SILL STO'VE WORKS,OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

I HEATING APPARATUS.

Application filed February 6, 1923. Serial No. 617,351.

To all whom it may concern:

Be it known that I, JOHN A. THoMAs, a citizen of the United States,residing at Rochester, in the county of Monroe and State .of New York,have invented certain new and useful Improvements in Heating Apparatus;and I do hereby declare the following to be a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, forming a part of this specification, and to the referencenumerals marked thereon.

This invention relates to heating apparatus, and more particularly toheating stoves and furnaces of the variet com risin an air heating dome,the chief object of the invention being to provide apparatus of thischaracter. with simple, practical and efiicient means for variablycontrolling the degree to which the dome is heated. To these and otherends, the invention consists in certain improvements and combinations ofparts, all as will be hereinafter more fully described, the novelfeatures being pointed out in the claims at the end of thespecification.

. In the drawings:

Figure 1 is a sectional elevation of a stove or furnace embodying thepresent invention;

Figure 9. is a similar view of parts shown in Figure 1, but in adifferent operating position;

Figure 3 is an enlarged sectional plan view on the line 3= 3 of Figure1, and

Figure 4 is a similar view on the line et -4c of Figure 1.

Similar reference numerals throughout the several views indicate thesame parts.

The invention is shown in the present in stance by way of illustrationas embodied in an apparatus or furnace for heating air comprising afirepot 5 of the usual or any suitable variety with an ashpit 6therebelow and a heating dome 7 above, these parts being enclosed in acasing 8 including a hood 9 forming a space in which circulating air isheated by the dome and other parts. At 10 is the fire door and 11represents the door affording access to the ashpit. These parts may havevarious known forms of construction such as shown for example in thedrawings, a more detailed description of which is unnecessary.

The heating dome in the present instance has a portion of its rear wallcut away as at 12 to form an opening of substantial width extending fromtop to bottom of the dome, and over this opening there is secured as bymeans of bolts 13 a casing 14 forming a recess 14? projecting laterallyoutward from the dome and in communication therewith. Casing 14 adjacentits bottom is formed witha laterally projecting smoke flue connection15. Communication between the flre and the smoke flue is controlled by aregulating deflector inthe form of a division or deflecting plate 16shaped and positioned to constitute a portion of the wall of the heatingdome between. the latter and the lower portion of the recess formed bythe casingl. This deflector is preferably in the form of a plate asshown, adapted to fit the lower portion of the communicating openingbetween the dome and the casing, the plate having its lower half curvedas at 17 to conform with the circular wall of the dome. The upper half18 of the plate is preferably plane shaped and is discontinued. at asubstantial distance from the top of the dome to afford a passage 19through the top of the dome into said recess, and the smoke flue. Theopposite sides of the top of the plate are preferably pivotallysupported on the adjacent dome walls as for example by trunnions 20carried by the plate and turn ing in brackets 21 on the dome. Thebracket bearings are preferably open-topped as shown, to permit easyremoval of the plate when desired.

' hen the deflector plate occupies the position shown in Figure 1 itcloses communication between the lower portion of the dome and the fluerecess 14* and serves as a baflle for deflecting the products ofcombustion upwardly through the top of the dome and thence into the fluerecess, the passageway 19 being then the only means of escape for theheated gases so that maximum heating of the dome is accomplished. It isapparent however that the deflector plate may be swung inwardly of thedome to the position illustrated in Figure 2 for establishingcommunication between the bottom of the heating dome and the smoke flue,the plate serving in this position also to deflect the gases throughthis shorter path lay-passing the upper portion of the dome, so thatminimum heating of the latter is produced. Such adjustment of thedeflector plate is ac.

V i I 1,543,630

complished by a-controller preferably comprising a bar 22 pivotallyconnected with the plate as at 23 and extending forwardly across thedome and through an opening in the front of the casing of the apparatusabove the fire-door as shown. The bar is formed with a series of notches24: for retaining engagement with the side of the casing opening inwhich it slides, and it is apparent that the bar may be pulled forwardlymore orless' for swinging the deflector toward the position shown inFigure 2 for reducing the heating effects to a greater or less degree asmay be desired and as determined by the particular one of the notches 24engaged with the casing. l/Vhen the bar is raised on its opening in thecasing and released, the deflector may be swung by gravity or manualpressure to the position shown i'n Figure 1 in which the maximum I ieatis obtained.

' The operation of the apparatus has been explained in connection withthe description or its construction and it is apparent that theinvention provides a regulating device of an exceedingly simple andpractical character app-licable'to a wide variety of stoves, the termstove being used herein in a broad sense inclusive of furnaces andsimilar heating apparatus. The apparatus maybe manufactured at a lowcost, and operates conveniently and efliciently to accomplish theobjects described.

I claim as my invention:

1'. A. heating apparatus comprising afire pot, a heating dome above thelatter, a smoke flue communicating with said dome adjacent the top andbottom of a side thereof, a regulating deflector plate constructed andmovably mounted to either admit the products of combustion from thebottom of said dome to said flue or to deflect the same upwardly throughsaid dome to said flue, and a controller for variably adjusting theposition of said deflector plate.

2. A heating apparatus comprising a fire pot, a heating dome above thelatter, a

smoke flue communicating with said dome adjacent the top and bottom of aside thereof, a regulating deflector plate forming a portion of saiddome wall adjacent said flue and swingingly mounted to deflect theproducts of combustion to said flue either upwardly through said dome orfrom the bottom thereof, and a controlling device for maintaining saidplate in variably adjusted position. V

3. A heating apparatus comprising a fire pot, a heating dome above thelatter provided at one side with a portion projecting laterally outwardto form a recess for connection with a smoke flue, a. plate pivotallysupported adjacent its top and forming a movable wall portion for saiddome between the latter and the lower part of said recess, said platebeing adapted in one position to deflect the products of combus tionupwardly through said dome into said recess, and a device for swingingsaid plate inwardly oi the dome and securing it in position to partiallydeflect the products of combustion into said recess from the bottom ofsaid dome to variably control the heating of the same.

i. A heating apparatus comprising a flre pot, a heating dome above thelatter provided at one side with a communicating portion projectinglaterally outward to iorni a recess "for connection with a laterallyextending smoke flue, a wall portion for said dome between the latterand the lower part of said recess, said wall portion being discontinuedadjacent .the top of said dome and recess to afford an escape passagethereb-etwcen for the products of combustion, means pivotally supportingsaid'wall P01? tion, a bar connected with the latter and extendingeXteriorly of the stove for swinging said wall portion to controlcommunication between the side of said dome and recess, and means formaintaining said bar in different positions of'adjustment.

JOHN A. rrroMAs.v

